In order to improve the overall economic benefits of fish farming in ponds and to overcome the defects in the quality of commercial oysters cultivated in greenhouses, we can put a small amount of quail species in ponds for the polyculture of fish ponds in the same pool. The polyculture mode has the following advantages:
First, the polyculture of fishponds can make full use of the water resources and increase the comprehensive production of the surimi culture. The economic efficiency of the polyculture pond is several times higher than that of the traditional aquarium.
The second is that the polyculture of fish gills improves the dissolved oxygen conditions of the water body. The old mantis can walk up and down in the water body to exchange the upper and lower water layers. The supersaturated oxygen produced by the photosynthesis of the upper layer phytoplankton can be expanded to the bottom layer to make up for the lack of dissolved oxygen in the bottom water body, which is beneficial to the growth of fish and plankton. Reproduction.
Third, the polyculture of fish gills can accelerate the oxidative decomposition of organic matter in the sludge at the bottom of the pool to prevent sudden changes in water quality; it is beneficial to the purification and stabilization of water quality and promote the normal growth of fish.
Fourth, after the polyculture, the fish can directly feed on the residual baits left by the calluses. The old clover who walk through the bottom silt can promote the decomposition of organic matter, providing a large amount of feed for the filter-feeding fish, which in turn promotes The old man's growth. Polyculture of fish gizzards can enable a bait organism to be reused in ponds, greatly improving the utilization of food organisms.
Fifth, the old man can eat sick fish or dead fish that are slow in action, thus preventing the spread and spread of pathogens and reducing the chance of spreading fish diseases.
Sixth, the quality of the commodities raised by the fish and polyculture is relatively high, which is no different from that of the natural wild quail. The economic benefits of breeding are higher.
The main technical measures for the polyculture of fish gills are as follows:
1. Renovation of ponds A 30-cm high anti-escape wall is built around the pond. The four corners are arc-shaped. The inner wall is smoothed with concrete. The top of the wall is preferably “pressed†in the shape of “factory†to prevent the old man from escaping. A bamboo basket is set in the fish pond as a drying platform for drying the backs of the daddy without the need for additional equipment such as food tables.
Second, reasonable stocking of zooplankton ingestion of filter-feeding fish, omnivorous fish, herbivorous fish can be mixed with the old cockroach pool polyculture, but the fish cod polyculture pool should not be put in herring.
Third, the rational breeding stock density If you use the natural food bait in the pond as the main, you can increase investment in some snails, quail meat and other animal feed, 200 to 250 grams of water per mu of water species 50 to 100 , Can produce 20 to 40 kg of goods. If feeding mainly quail feed, then 250 to 350 quail species of 200 to 250 g per mu of water surface can be produced, and 100 to 150 kg of merchandise can be produced.
Fourth, strengthen the feeding and management In the daily aquaculture management, the biological characteristics of the old mantis, combined with the biological characteristics of the polyculture fish, take appropriate management measures. For example, the old man is afraid of alarm. In order to promote the feeding and growth of the daddy, we must keep the surrounding environment quiet, especially to reduce the number of pulls. (Xie Xiaotao, Vocational High School, Dayu Town, Jiyuan City)
First, the polyculture of fishponds can make full use of the water resources and increase the comprehensive production of the surimi culture. The economic efficiency of the polyculture pond is several times higher than that of the traditional aquarium.
The second is that the polyculture of fish gills improves the dissolved oxygen conditions of the water body. The old mantis can walk up and down in the water body to exchange the upper and lower water layers. The supersaturated oxygen produced by the photosynthesis of the upper layer phytoplankton can be expanded to the bottom layer to make up for the lack of dissolved oxygen in the bottom water body, which is beneficial to the growth of fish and plankton. Reproduction.
Third, the polyculture of fish gills can accelerate the oxidative decomposition of organic matter in the sludge at the bottom of the pool to prevent sudden changes in water quality; it is beneficial to the purification and stabilization of water quality and promote the normal growth of fish.
Fourth, after the polyculture, the fish can directly feed on the residual baits left by the calluses. The old clover who walk through the bottom silt can promote the decomposition of organic matter, providing a large amount of feed for the filter-feeding fish, which in turn promotes The old man's growth. Polyculture of fish gizzards can enable a bait organism to be reused in ponds, greatly improving the utilization of food organisms.
Fifth, the old man can eat sick fish or dead fish that are slow in action, thus preventing the spread and spread of pathogens and reducing the chance of spreading fish diseases.
Sixth, the quality of the commodities raised by the fish and polyculture is relatively high, which is no different from that of the natural wild quail. The economic benefits of breeding are higher.
The main technical measures for the polyculture of fish gills are as follows:
1. Renovation of ponds A 30-cm high anti-escape wall is built around the pond. The four corners are arc-shaped. The inner wall is smoothed with concrete. The top of the wall is preferably “pressed†in the shape of “factory†to prevent the old man from escaping. A bamboo basket is set in the fish pond as a drying platform for drying the backs of the daddy without the need for additional equipment such as food tables.
Second, reasonable stocking of zooplankton ingestion of filter-feeding fish, omnivorous fish, herbivorous fish can be mixed with the old cockroach pool polyculture, but the fish cod polyculture pool should not be put in herring.
Third, the rational breeding stock density If you use the natural food bait in the pond as the main, you can increase investment in some snails, quail meat and other animal feed, 200 to 250 grams of water per mu of water species 50 to 100 , Can produce 20 to 40 kg of goods. If feeding mainly quail feed, then 250 to 350 quail species of 200 to 250 g per mu of water surface can be produced, and 100 to 150 kg of merchandise can be produced.
Fourth, strengthen the feeding and management In the daily aquaculture management, the biological characteristics of the old mantis, combined with the biological characteristics of the polyculture fish, take appropriate management measures. For example, the old man is afraid of alarm. In order to promote the feeding and growth of the daddy, we must keep the surrounding environment quiet, especially to reduce the number of pulls. (Xie Xiaotao, Vocational High School, Dayu Town, Jiyuan City)
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